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Finding the Fourth Proportional to 650.61, 897.84 and 385.07

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Solution

The fourth proportional to 650.61, 897.84 and 385.07 is: 531.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.61 : 897.84 = 385.07 : x
  2. Step 2: Convert to fraction form
    650.61/897.84 = 385.07/x
  3. Step 3: Cross multiply
    650.61x = 897.84 × 385.07
  4. Step 4: Simplify right side
    650.61x = 345,726.76
  5. Step 5: Solve for x
    x = 345,726.76/650.61
  6. Step 6: Final answer
    x = 531.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.